Throughput Differentiation for TCP Uplink Traffic in IEEE 802.11e Wireless LANs
Vasilios A. Siris, P. Alafouzos · 2006
We investigate a model to achieve throughput differentiation and efficient channel utilization for TCP uplink traffic over IEEE 802.11e's enhanced distributed channel access (EDCA) mechanism, when TCP acknowledgement packets are given higher priority for accessing the wireless channel compared to data packets. The proposed model can be used to tune the minimum contention window of EDCA to support efficient throughput differentiation according to a weight parameter, while taking into account factors such as the CSMA/CA and RTS/CTS procedure and different physical layer transmission rates. Simulation results validate the accuracy of the proposed model, and show its effectiveness in supporting weighted throughput differentiation.